What is the minimum width of metal straps used for supporting ducts in one-and two-family dwellings?

The minimum width of metal straps used for supporting ducts in one- and two-family dwellings is indeed 1 inch. This specification aligns with the requirements established in the North Carolina Mechanical Code, which aims to ensure that ductwork is properly supported and secured. The 1-inch width provides adequate strength and stability to prevent sagging or failure of the duct support system.

This requirement is essential for maintaining the integrity of ventilation systems, as properly supported ducts help to ensure efficient airflow and reduce the potential for air leaks. Straps that are too narrow may not distribute weight effectively or could become over-stressed, leading to potential collapse or misalignment of the ductwork, which would result in decreased system performance.

In construction and mechanical work, adhering to the minimum standards is crucial for safety, functionality, and compliance with building codes, which is why understanding the specific dimensions for duct support materials is important for anyone working in this field.